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<html>
	<head>
		<meta charset="UTF-8" />
		<title>Document</title>
	</head>
	<body>
		<script type="text/javascript" >
			function add (a,b){
				a = 9
				return a+b+Math.random()
			}
			add(1,2)
			add(1,2)
			add(1,2)
			add(1,2)
			add(1,2)
		</script>
	</body>
</html>